Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ea8292cd70b6c477e2993f8097ed3a190562ff7c0138d2531dfad89e271345f6' 
  AND token = 'HWMNoDCa/P7FI7nd5WgQGPikcmLrvqyhvmNxu6P4BuM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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