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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e022057b351ff93274e119d7e2ecaea340e83b661baf60c69b781cb4541283ee' 
  AND token = 'Je3GXTUuc2ZA1X84PCiLA8uq7ty1lfGo4QkfsCuoYsQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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