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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0058c1fe4e41b1ef8fb98d4f2187e2a385381492dc633825045d871867c86d23' 
  AND token = 'iLtOpIBntesIeUZSYD9dqLvzru8KOIDiCfdh2bP1kCE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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