Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0a3809c4e601ecc7df4a907e0fe6966b1f6f332644d3edadc20ef0451895a888' 
  AND token = 'l40WIQprHDsCZO66h8iJVUJd517JVKipWFyn2aJg6Wc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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