Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0ef6271d2e31f064648588a35c4fcafad542e0a815abac62e1cd2129d7908396' 
  AND token = 'MVtSwsD6rOohfC4N+p2N7K1DhJm2HWCjtD+QuIAbCo4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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