Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '74eafe4e2d0276e264ee363d37b9a2746c7102d139c5fcae8d78634e273f3581' 
  AND token = 'GL9+1m+XvnbE/9QiJVHf4/bx9gU2kGrNCmZFauCEdL4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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