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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '9d7444aadf1bd5b19ec2b01e6f9bcffa98be7d184787b85927038b46b1f9da95' 
  AND token = 'B2X7Jz+inbNl7jMW66s4lTorh0uvPLi7Z+3R1r+83Iw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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