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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0b2a889b36998bf0b83c634c3f95f4eee5c7ac0e502d79c8bf60cefc5ac0906f' 
  AND token = 'asjGG1JQNzYCX9iCllgC3MBwky2BIbQ0T319z2PWS5U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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