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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd908af18fd5bafb22453aae6947a9f71e02bbdd85e6cf2ec717539db0a6a06d4' 
  AND token = 'G2YVhc3IaomIIPUFEpVY6Bi4nNaUo5t7Y1atHshUylw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}