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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '11284e713058910bbf68b89773ba6c39caa3f8684585b098f2a0d5c241fa0bee' 
  AND token = 'aA/ITD9A5FFFP49d9UPXahxkLZueZZh+ky3a2zPW4P8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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