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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ebef97f875e7a663a26dd7e48e7a3ae073b3fed5cb9e51f8d96033c892c5d3d9' 
  AND token = 'oj1x4BU/Pr4lFfpW9Ulp/1+HYTVfQc7Orei6/edId6U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00056

JSON explain

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