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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'fc7ae832eb029eb3b391b0ce402266a0e8bf4d7cdda37aaff9cc2bda34b77229' 
  AND token = 'BHqsbpea3+y002LRa3tL5MBciddpQX1iufjlIUyzL7I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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