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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '09cc82716066a002aa342b66bd44bb47f1a6a88d96b6ecb1022ca9c9f921c619' 
  AND token = 'Y9yPEfJHiBFtho1iMgKCJGR2K6Ldvoc20VCy2PjD+xY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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