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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0f95f2b20bd5b2f6d353db220925c7f54f2217a10be0573bf333e62b351a703e' 
  AND token = 'ZEFmXjGlx4gRJcIyTiuP4uGuy8Os0dHc4UPIWsUttdc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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