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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a89533bb16c78fb77f2e7134bc7c2e6d10b335b37179fb265148e0bb5e7a6a01' 
  AND token = '575vpEmJ4LVy/1RMdPbX76+8FW2PEeKaoAYJt5VTskk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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