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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '07ecaf8a8562e7c3308fa2ea8d4588af02a2c60537662d156dadeb92b6c905a0' 
  AND token = 'ZpeQk8zyO4pXxogIAvRHm9xWPzxpj/j56LRNcrUYaBU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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