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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f94a1fb2d98bf1c8ae61cceabf77f8c4a8b188ccb2267e2c0cf2b8f297cd2a2b' 
  AND token = 'A5/MVEKwuXSS2+6eI5M5olPSCSdTfCjIkyBMYkmF70k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}