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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1359f7273b0e73ba93da9ef5a47bfb27a1befa699c8480697367146eb1c81b36' 
  AND token = 'jWRIkjqa8p7uI+34rtN3D4FwvOaG1JmzbUOr9wDzJMw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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