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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '667ce2da46c0475b75a68c6f2a80aeeb18b860019bc08a5d64ef1e94c01b007d' 
  AND token = 'Ie8c7MlLtiEV0iwkIdfE8n1so8SbHO2MIr6GPE7YWto=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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