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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '24afe22502ac2e4f5ecc4d8a20dfccde9f7d8e5aadc88ef308d01cf9df215782' 
  AND token = 'l8dlC4Z8nygXtC7x/6uqOGK8i4OWknR4uAPplUSDjD0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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