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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd5ecc837f05176e943a4fbe62777acbcc263771b675c126525a798adf2b071d0' 
  AND token = 'BhGPaIphH4ddW0WEnjoo8g2Y7kTv6MnMt5VZEp94C0w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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