SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '7f764ea78fb27b42853949bd7429931166ba1de5fedc00290d7fc8b5d2a5f48e' 
  AND token = 'm0/3S+kV4uLYwi86tUGeKCl81ZehvAhjhq/R7Cj36Ns=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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