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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'fcf9fc4d6dcbafde2f0ab9b7b5845992d946f38775bde8204adcbc8446472aff' 
  AND token = 'IKX09xb6jxCGu5EEDIAEA8DazlbN6cQeeqTKn/nBjk0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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