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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'de9888062b9ecb200350916c72462c777954eaec5aaf3abac5a0ba5fcb8a56bc' 
  AND token = 'GMf8+FcA1lDJTfCPjIRTbea2lypVkGNsN1IE2eRbOBg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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