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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '6ff130029416e409c7832431b86e6e9360dbf32242dbe79d495aa94c77a347f7' 
  AND token = 'hyUsU4hh0Des52xan0PwCBGUYLmM9hfaKNYe1rotGtg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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