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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '64cb11c9105db3676bc83c6f52b2b6facdc81bb7c0907cda6510630cad599025' 
  AND token = 'llUeRgapGwiIwoq3/LV2vtb8DkZ76QeFYxiaPpkKc2I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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