Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7256f95616c5d3827aa0bcb2a96398f14ce5759e4fae900efc86dbe0b778d5db' 
  AND token = 'o2hQ4T3aRJWT4kviUh96vnKK5H3WrNP0RY0uXScbE1A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00053

JSON explain

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