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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '60815bd44dc716cd959b84b35c22454759c476c2981af7046d2e358ec2870ba7' 
  AND token = 'EnO3LuLFduxf7b/tXuc0Udx2A2M+tk3470/NcDGoeGs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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