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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4be95424d8c9c087809b42d81f8b704ec743500bd441150a4ce5e9ef6dc685c3' 
  AND token = 'dl77/dtd+8nQLoAkgIoyzhQ8VZ42wsaovPRmd2pNBtc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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