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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '4c5f25d816ca274c2d8ce0e0bb64d2fc48a0a85e21480bee5cc2ed0800186032' 
  AND token = 'oMePybgvIvJaZDpZEhTQ/GDVHg+y8SfZedUsVCkPqlw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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